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Front Evaporator Temperature Sensor: Inspection

  1. INSPECT FRONT EVAPORATOR TEMPERATURE SENSOR 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      1-2 -10°C (14°F) 7.30 to 9.10 kΩ
      1-2 -5°C (23°F) 5.65 to 6.95 kΩ
      1-2 0°C (32°F) 4.40 to 5.35 kΩ
      1-2 5°C(41°F) 3.40 to 4.15 kΩ
      1-2 10°C (50°F) 2.70 to 3.25 kΩ
      1-2 15°C (59°F) 2.14 to 2.58 kΩ
      1-2 20°C (68°F) 1.71 to 2.05 kΩ
      1-2 25°C (77°F) 1.38 to 1.64 kΩ
      1-2 30°C (86°F) 1.11 to 1.32 kΩ
      NOTE:
      • Touching the sensor even slightly may change the resistance value. Hold the sensor connector.
      • When measuring the resistance, the temperature of the sensor and the cooler thermistor must be the same.

      HINT:

      As the temperature increases, the resistance decreases (see Fig 1 ).

      If the operation is not as specified, replace the evaporator temperature sensor.

      Fig 1: Identifying Evaporator Temperature Sensor Connector Terminals
      G05390136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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